from DNA to protein: gene expression 1

Question 1

how many steps does gene expression occur in?

Answer 1

-2
-transcription
-translation

Question 2

transcription

Answer 2

-DNA sequence is copied to a complementary RNA sequence

Question 3

translation

Answer 3

-the RNA sequence is the template for an amino acid sequence

Question 4

central dogma of molecular biology

Answer 4

describes the ways in which information flows in a cell

Question 5

messenger RNA (mRNA)

Answer 5

-one strand of DNA is copied to a complementary mRNA strand
-in eukaryotes, mRNA moves to the cytoplasm where it is translated into a polypeptide. nucleotide sequence determines the amino acid sequence.

Question 6

ribosomal RNA (rRNA)

Answer 6

-ribosomes are made up of proteins and rRNA
-rRNA catalyzes peptide bond formation between amino acids to form a polypeptide

Question 7

transfer RNA (tRNA)

Answer 7

-binds specific amino acids and recognizes specific sequences in mRNA
-tRNA recognizes which amino acid should be added next to a growing polypeptide chain